Reamer attachment



Jan. 30, 1940. A. DANTRY ET AL REAMER ATTACHMENT Original Filed Aug. 6,1937 Hm e/v'ca pd By @wmih 7 A iiprneys Patented Jan. 30, 1940 j I y I2,188,624

UNITED STATES PATENT} OFFICE Application August 6, 1937, Serial No.157,815

Renewed December 6, 1939 1 Claim. (Cl. 7773L5) This invention appertainsto new and useful im- The shank I2 is provided with the lateral stem I3provements in reamers and more particularly to provided with the headI4. This stem can be pipe reamers. engaged into either the notch I5 orthe notch I6 The principal object of the present invention dependingupon the extent of the threading oper- 5 is to provide a reamerattachment for thread dies ation and the consequent reaming requirement.

whereby both the reaming and threading opera- While the foregoingspecification sets forth the tions can be performed simultaneously.invention in specific terms, it is to be understood Other importantobjects and advantages of the that numerous changes in the shape, sizeand malnvention will become apparent to the reader of terials mayberesorted to without departing from the followingspecification. thespirit and scope of the invention as claimed 10 In the drawing:hereinafter. 1 Figure 1 represents a side elev nal view of Havingdescribed the invention What is claimed the attachment. as new is: pFigure 2 s an end elevational view. A reamer attachment for thread diescompris- 1 Figure 3 is a n ltud a Sectwilal VleW through ing a barrel,mounting means for the barrel, said the assembly. barrel being providedwith a longitudinally ex- Figure 4 is a fragmentary detailed- Sectionaltending slot therein, a reaming head provided view of the reamerelement. with a shank slidably disposed in thebarrel, the

Referring to the drawing wherein like numerupper d of th b 1 being l d,spring als designate like parts, it can be seen that nu-. interposedbetween the closed end of the barrel meral 5 denotes a barrel providedwith the longia d th inner nd f the shank, id h k being tudinallyextending slot 6 in the side wall thereof. provided with a threadedopening, a pin provided The barrel 5 is closed at one e d a d at itsDPO- with a threaded end for threaded engagement in 2 site end providedwith the U-shaped extension I the threaded bore, said pin being disposedthrough 26 having the foot portions 89. These foot porthe slot in thebarrel and providedwith a finger tions 89 are provided with slideways l0extendengageable knob at its outer end, said barrel at ing into the samefrom the side edges thereof. the edge portion of the slot being providedwith These slots are to receive the securing means of oblique notchesfor receiving the said pin disposed so the thread die. in a backwarddirection.

Numeral ll denotes the reamer head provided with the shank l2 extendinginto. the barrel 5. AMERICO. DANTRY.

